Add client debugging.

Author: mgrimesix

fs/nfs/client.c

@@ -879,8 +879,12 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 	server->lxasize = min_t(unsigned int, raw_max_rpc_payload,
 				nfs42_listxattr_xdrsize(XATTR_LIST_MAX));
 
+	pr_info("NFS CLIENT: fsinfo->xattr_support = %u, will %s NFS_CAP_XATTR\n",
+		fsinfo->xattr_support, fsinfo->xattr_support ? "SET" : "NOT SET");
 	if (fsinfo->xattr_support)
 		server->caps |= NFS_CAP_XATTR;
+	pr_info("NFS CLIENT: server->caps = 0x%lx, NFS_CAP_XATTR = %s\n",
+		server->caps, (server->caps & NFS_CAP_XATTR) ? "SET" : "NOT SET");
 #endif
 }
 

fs/nfs/nfs4xdr.c

@@ -4324,8 +4324,12 @@ static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
 			return -EIO;
 		*res = be32_to_cpup(p);
 		bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
+		pr_info("NFS CLIENT: Decoded xattr_support from server: %u (raw value)\n", *res);
+	} else {
+		pr_warn("NFS CLIENT: Server did not send FATTR4_WORD2_XATTR_SUPPORT attribute\n");
 	}
 	dprintk("%s: XATTR support=%s\n", __func__, str_false_true(*res == 0));
+	pr_info("NFS CLIENT: Final xattr_support value: %u\n", *res);
 	return 0;
 }